From 29dd27c6953bea80686b5ef4b9f189c7724d0298 Mon Sep 17 00:00:00 2001
From: Alexey Alexandrov <aalexand@google.com>
Date: Mon, 12 Aug 2019 12:17:19 -0700
Subject: [PATCH] Internal change

PiperOrigin-RevId: 262978966
---
 src/throttler_api.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/throttler_api.cc b/src/throttler_api.cc
index 538f40e3b..384b1d0cb 100644
--- a/src/throttler_api.cc
+++ b/src/throttler_api.cc
@@ -400,7 +400,9 @@ void APIThrottler::ResetClientContext() {
 void APIThrottler::Close() {
   std::lock_guard<std::mutex> lock(ctx_mutex_);
   closed_ = true;
-  ctx_->TryCancel();
+  if (ctx_) {
+    ctx_->TryCancel();
+  }
 }
 
 }  // namespace profiler